Metallic pile



(No Model.)

R. GRAY 8: B. R ABBOTT.

I METALLIC PILE'. v No. 307,541. Patented Nov. 4, 1884.

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WITNESSES: INVENTOR. v 10% gm Ad. flm 'mu'w a? W W y 296 @2116 m ATTORNEY;

Nine ra'rns AT-EN Fries.

METALLIC PILE.

- SPECIFICATION forming part of Letters Patent No; 307,541, dated November 4-, 1884. 7

Application filed March 6, 1883.

To all whom, it may concern.-

Be it known that we, RICHARD GRAY and BENJAMIN R. ABBOTT, of Bloomington. in the county of McLean and in the State of Illinois, have jointly invented certain new and useful Improvements in Metallic Piles; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon,

making a part of this specification.

Our invention relates to the construction of metallic piles and driving or placing them in the ground for foundations or substructures. Heretofore such piles have been made hollow or having a central cavity extending nearly or throughout their entire length. This form is objectionable for the reason that the cavity is liable to become filled with water, the eX- pansion of which when frozen is liable to burst this column. 'To provide against this danger heretofore it has been found necessary to fill or seal such cavities. Another objection to hollow metallic piles is the increased cost and difficulty in manufacturing, particularly when cast in inolds. This arises from the fact that the production of a cavity necessitates the employment of a core,which requires skill and labor in adjustment.

Our invention has for its object the produc tion of a metallic pile without a central cavity, possessing great strength and stiffness, cheaply manufactured, and easily erected; and to this end the invention consists in novel features of construction and combination and arrangement of parts, all as will be hereinafter fullydescribed, and set forth in the claims hereto annexed. v

Referring to the accompanying drawings, Figure 1 is a perspectiveview of our improved pile, having solid center, straight radial flanges, a socket at its upper end, and provided with a broad bearing-plate keyed to the body of the pile. Fig. 2 is a perspective view of our improved pile, having solidcenter, tapered radial flanges, a socket atits upper end,

and provided with a broad bearing-plate.

keyed to the body of the pile. Fig. 3is ahori-' zontal cross section cut on the line at 00. Fig. at is a vertical cross-section of the wedgedshaped key 10. Figs. 5 and 6 are perspective (N0 model.)

w with groove and is pointed at its lower end. P is the broad bearing-plate with large circular opening, and is secured to the pile by the keys w w w. projections a a.

In Fig. 2, A is the body of the pile, having a solid center and radial flanges, which are slightly tapered, and is sharpened at its lower end. P is a broad bearing-plate having a square or angular opening, and secured to the pile by keys w ww. S is a socket provided with a horizontal flange, 1), preferably extend ed around the socket S, as shown. B is a plug provided with lateral flange B, the flanges B. and Z) having openings B for the reception of bolts, whereby one pile may be secured to another. The plug B fits in the socket S, and the flanges B b are brought together and bolted or otherwise united. The object of the horizontal flange or upward projections is to provide a means of coupling two or more columns together, and also for attaching to the superstructure, as shown in Figs. 7, 8, and 9.

S is a socket provided with upward The socket S is preferably made rectangular,

ward projections of the superstructure, as

shown in Figs. 8 and 9. The object of the broad plate P is to re-enforce the pile, so that it will notsink under the superincumbent weight, and also to this end the pile is pref erably made tapering, as shown in Fig. 2, so that it will not slip through the plate P after being keyed. The wedged-shaped key is preferably inade'large and of cast metal to insure durability. This key is shaped to conform to the aperture which it fills, and has a longitudinal groove in its inner face. This groove fits against the outer edge of the flange of the pile and keeps the key in an upright position.

- \Ve are aware that bearing-plates of pecuiar construction, having openings made to conform to the shape of the pile, have been used; but experience has shown that such plates are objectionable, for the reason that they often require fitting, because of imperfection in casting either the pile or the plate itself. '0 have, therefore, adopted a plain, and large opening to avoid this dil'lieulty.

Having thus fully described our invention, what we claim as new, and desire to seeureby Letters Patent, is

1. A pile provided on its upper end with a socket and lateral flange, in combination with a superposed poi-lion provided. with plug or end 1; adapted to lit in said socket, and alateral llange whereby one pile may be plaeed upon another and secured, subslantially as set forth.

2. A, pile provided on its upper end with a seeket and luleral llange having openings, in combination with a superposed portion adapt ed to lit in said socket, and a lateral llange having openings, and means whereby sail'l flanges may be secured, substantially as speeified.

3. A pile consisting of a solid body having radial longitrulinal flanges tapering from lop to bottom, in combination with a plate having a eentrul opening and a tapering grooved hey adapted to fit the outer edges of the flanges and lie between said plate and flanges, whereby the parts may be rigidly secured in the manner and for the purpose specified.

4. The combination, with a metallic pile hari ng asolid center, longituiflinal. flanges, and a soeket at its upper end, 01' the plate 1 having large central opening and adapted to be keyed to the pile, substantially as shown. and described.

.3. The wedgedshaped key 10, having a longiiudinal groove .in its inner face, in combination with plate fl, having a large central opening, and the pile A havi nglongitudinal flanges, substantially as showlr and described.

Iln testimony that we claim the foregoing we have hereunto set our hands this 27th day ol" lllebruury,1l8r:.

' ltltllrlA'lll) GRAY. 131 1t. ABBOlT.

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